ImageMagick

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dlemstra wrote:It might help if you specify what you consider the 'correct' output.

Sorry dlemstra, I was going to send over the images to someone once I heard back. Since we are laser engraving , the photo needs to be dithered in halftones , since any grayscale in the image will simply be converted by the laser driver and cause unreliable results.

The photo also needs to be between 500dpi and 1000dpi

The photo I'm posting is the unedited version and the correctly dithered version that engraves very well.

Thanks!

Last edited by DitherMyImages on 2015-04-15T04:29:25-07:00, edited 1 time in total.

snibgo wrote:These are two different photos, most clearly seen by comparing feet. Posting the same photo before/after treatment would help.

The "after" photo also seems to be heavily sharpened.

Sorry , I changed the link to the correct file...

There may be a few things going on with the image that are outside of my scope and understanding. The software we use to convert this image is designed by the laser manufacturer and they obviously do not divulge any of the algorithm. It doesn't need to be exactly the same but dither pattern works extremely well when engraved.